Microsoft KB Archive/34191

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IBM PC/XT Motherboard Switch Settings: Floppy Drives PSS ID Number: Q34191 Article last modified on 09-19-1991 PSS database name: PSS

Summary:

The IBM PC/XT series of computers have switches on the motherboard to determine the system configuration. If these switches are set incorrectly, erratic errors can result.

More Information:

The following are the settings for floppy-drive installation:

Number of Floppy Disk Drives Installed Switch Block 1

                           -------------------
                           : 1 2 3 4 5 6 7 8 :
                           : x           x x : on
   0 Drives                :                 :
                           :                 :
                           :                 : off
                           -------------------

                           -------------------
                           : 1 2 3 4 5 6 7 8 :
                           :             x x : on
   1 Drive                 :                 :
                           :                 :
                           : x               : off
                           -------------------

                           -------------------
                           : 1 2 3 4 5 6 7 8 :
                           :               x : on
   2 Drives                :                 :
                           :                 :
                           : x           x   : off
                           -------------------

Copyright Microsoft Corporation 1991.